Build (method = -2) #dp: 502 Step-3' Graph: 129 vertices and 380 arcs (0.01s) Step-4' Graph: 31 vertices and 184 arcs (0.01s) #V4/#V3 = 0.24 #A4/#A3 = 0.48 Ready! (0.01s) Optimize a model with 70 rows, 185 columns and 497 nonzeros Presolve removed 25 rows and 31 columns Presolve time: 0.00s Presolved: 45 rows, 154 columns, 414 nonzeros Variable types: 0 continuous, 154 integer (22 binary) Found heuristic solution: objective 345.0000000 Found heuristic solution: objective 334.0000000 Optimize a model with 45 rows, 154 columns and 414 nonzeros Presolved: 45 rows, 154 columns, 414 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.140e+02 Factor NZ : 6.000e+02 Factor Ops : 9.738e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.60368780e+03 -3.18020896e+03 6.71e+03 1.87e-01 6.88e+01 0s 1 8.03821198e+02 -1.05298321e+03 8.13e+02 4.44e-16 1.07e+01 0s 2 3.63298523e+02 -1.29373353e+02 5.78e+01 6.66e-16 1.76e+00 0s 3 2.67211030e+02 1.54664772e+02 2.11e-02 2.22e-16 3.48e-01 0s 4 2.39682935e+02 2.19870792e+02 5.00e-03 1.39e-16 6.13e-02 0s 5 2.33110039e+02 2.26627561e+02 1.50e-03 2.22e-16 2.01e-02 0s 6 2.31084092e+02 2.29829219e+02 3.37e-04 3.33e-16 3.89e-03 0s 7 2.30638566e+02 2.30561031e+02 6.24e-06 1.18e-16 2.40e-04 0s 8 2.30625014e+02 2.30624936e+02 1.42e-13 2.22e-16 2.41e-07 0s 9 2.30625000e+02 2.30625000e+02 1.05e-12 1.50e-16 2.41e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.30625000e+02 Root relaxation: objective 2.306250e+02, 44 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 230.62500 0 16 334.00000 230.62500 31.0% - 0s H 0 0 231.0000000 230.62500 0.16% - 0s Explored 0 nodes (58 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.310000000000e+02, best bound 2.310000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 231 Solution: 21 x [1] 8 x [2] 9 x [3] 12 x [4] 6 x [5] 4 x [6] 15 x [7] 15 x [8, 35] 11 x [9, 37] 1 x [10, 33] 5 x [10, 39] 1 x [11, 32] 14 x [12, 33] 7 x [13, 37] 14 x [14, 34] 3 x [15, 34] 13 x [16, 30] 1 x [17] 6 x [17, 28] 1 x [17, 29] 1 x [17, 30] 6 x [17, 31] 2 x [18, 25] 11 x [18, 26] 5 x [19, 24] 1 x [19, 25] 14 x [20, 23] 3 x [21, 23] 2 x [22, 26] 5 x [24, 25] 3 x [24, 36, 37] 1 x [27, 36, 38] 1 x [27, 36, 39] 9 x [28, 31, 38]